<template>
  <div class="top-category" v-if="cateData && cateData.children">
    <div class="container">
      <!-- 面包屑 -->
      <xtx-bread>
        <xtx-bread-item to="/">首页</xtx-bread-item>
        <transition name="fade-right" mode="out-in">
          <xtx-bread-item :key="cateData.id">{{ cateData.name }}</xtx-bread-item>
        </transition>
      </xtx-bread>
      <!-- 轮播图 -->
      <xtx-carousel :sliders="sliders" style="height:500px" />
      <!-- 所有二级分类 -->
      <div class="sub-list">
        <h3>全部分类</h3>
        <ul>
          <li v-for="item in cateData.children" :key="item.id">
            <RouterLink :to="`/cate/sub/${item.id}`">
              <img :src="item.picture">
              <p>{{ item.name }}</p>
            </RouterLink>
          </li>
        </ul>
      </div>
      <!-- 不同的二级分类所关联的商品 -->
      <div class="ref-goods" v-for="item in cateData.children" :key="item.id">
        <div class="head">
          <h3>- {{ item.name }} -</h3>
          <p class="tag">温暖柔软，品质之选</p>
          <xtx-more />
        </div>
        <div class="body">
          <GoodsItem :good="good" v-for="good in item.goods" :key="good.id" />
        </div>
      </div>
    </div>
  </div>
</template>

<script setup>
import { ref, watch } from 'vue'
import { findBanner } from '@/api/home'
import { useRoute } from 'vue-router'
import GoodsItem from './components/goods-item.vue'
import { getFirstCategory } from '@/api/category'
// 获取轮播图数据
const sliders = ref(null)
findBanner().then(({ result }) => {
  sliders.value = result
  console.log(result)
})
// 获取对应的分类数据
const route = useRoute()
const cateData = ref(null)
// 获取一级分类数据
const getFirstCategoryFn = (cateId) => {
  getFirstCategory(cateId).then(({ result }) => {
    cateData.value = result
  })
}

// 侦听路由地址中id的变化并且获取当前一级分类id对应的数据
watch(() => route.params.id, (newVal) => {
  // 路由地址的id有变化，且当前访问的路由地址是一级路由时才触发
  if (newVal && route.path === '/cate/' + newVal) {
    getFirstCategoryFn(newVal)
  }
}, { immediate: true })

</script>

<style lang="less" scoped>
.top-category {
  h3 {
    font-size: 28px;
    color: #666;
    font-weight: normal;
    text-align: center;
    line-height: 100px;
  }

  .sub-list {
    margin-top: 20px;
    background-color: #fff;

    ul {
      display: flex;
      padding: 0 32px;
      flex-wrap: wrap;

      li {
        width: 168px;
        height: 160px;

        a {
          text-align: center;
          display: block;
          font-size: 16px;

          img {
            width: 100px;
            height: 100px;
          }

          p {
            line-height: 40px;
          }

          &:hover {
            color: @xtxColor;
          }
        }
      }
    }
  }

  // 二级分类对应的商品数据
  .ref-goods {
    background-color: #fff;
    margin-top: 20px;
    position: relative;

    .head {
      .xtx-more {
        position: absolute;
        top: 20px;
        right: 20px;
      }

      .tag {
        text-align: center;
        color: #999;
        font-size: 20px;
        position: relative;
        top: -20px;
      }
    }

    .body {
      display: flex;
      justify-content: flex-start;
      flex-wrap: wrap;
      padding: 0 65px 30px;
    }
  }
}
</style>